---
cve: "CVE-2026-56021"
severity: "MEDIUM"
cvss: 6.9
epss: "0.5%"
vendor: "Webmin"
kev: false
exploited: false
published: "2026-06-18 17:16:35"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-02T00:09:16+02:00"
---

# CVE-2026-56021

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- ce1ab74c6fe6a7c5f776ba8e62ec0fcf812414c9 (Commit)

## BSI-Hinweise (deutsch)

- [Webmin: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-2014)

## Referenzen

- <https://webmin.com/security/#webmin-prior-to-2641>
- <https://github.com/webmin/webmin/releases/tag/2.641>
- <https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-02.json>
- <https://www.cve.org/CVERecord?id=CVE-2026-56021>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56021) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_